Reading a SIF signal

[thelankanguy]

I am trying to read the data interpreted in a SIF signal using a Nucleo-F072RB. 

There are three parts to be identified in this signal;

1. Synchronization signal : A 50 ms LOW signal followed by a 0.98 ms HIGH signal.
2. Bit 0 : 0.98 ms LOW + 0.46 ms HIGH.
3. Bit 1 : 0.46 ms LOW + 0.98 ms HIGH.

 

**The HIGH part of the synchronization signal in the diagram is incorrect when cross checked using an oscilloscope. It should be 64 Tosc. 

 

How to extract these data bits and the sync signal precisely in order to decode and interpret the data ?